Troubleshooting Procedures
Qosmio X500
Maintenance Manual (960-Q08)
30
Procedure 4
Replacement Check
Fluorescent lamp, FL inverter, LCD module, HV cable and LCD/FL cable are connected to
display circuits. Any of these components may be faulty. Refer to Chapter 4,
Replacement
Procedures,
for instructions on how to disassemble the computer and then perform the
following checks:
If LED backlight does not light, perform Check 1.
If characters or graphics on the internal display are not displayed clearly, perform
Check 3.
If some screen functions do not operate properly, perform Check 3.
If LED backlight remains lit when the display is closed, perform Check 4.
Check 1 LCD/FL cable may be faulty. Replace FL/LCD cable with a new one following the
instructions in Chapter 4,
Replacement Procedure
and test the display again. If the
problem still occurs, perform Check 2.
Check2
FL inverter may be faulty. Replace FL inverter with a new one following the
instructions in Chapter 4,
Replacement Procedure
and test the display again. If the
problem still occurs, perform Check 3.
Check 3 LCD module may be faulty. Replace LCD module with a new one following the
instructions in Chapter 4,
Replacement Procedure
and test the display again. If the
problem still occurs, perform Check 4.
Check 4 System board may be faulty. Replace it with a new one following the instructions
in Chapter 4,
Replacement Procedure
.
Summary of Contents for Qosmio X500
Page 13: ...Qosmio X500 Maintenance Manual 960 Q08 ...
Page 14: ...Qosmio X500 Maintenance Manual 960 Q08 Chapter 1 Hardware Overview ...
Page 42: ...2 1 Qosmio X500 Maintenance Manual 960 Q08 Chapter 2 Troubleshooting Procedures ...
Page 86: ...Test Program for Field Qosmio X500 Maintenance Manual 960 Q08 1 Chapter 3 Diagnostic Programs ...
Page 277: ...Wiring Diagrams Qosmio X500 Maintenance Manual 960 Q08 F 2 ...